diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 898e53955..2002fb526 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -470,25 +470,33 @@
     "description": "Shown in conversation banner when more than one group member's safety number has changed, but they were previously verified."
   },
   "debugLogExplanation": {
-    "message": "This log will be posted publicly online for contributors to view. You may examine and edit it before submitting."
+    "message": "This log will be posted publicly online for contributors to view. You may download the full log before submitting."
   },
   "debugLogError": {
-    "message": "Something went wrong with the upload! Please consider manually adding your log to the bug you file."
+    "message": "Something went wrong with the upload! Please email support@signal.org and attach your log as a text file."
+  },
+  "debugLogSuccess": {
+    "message": "Debug log submitted",
+    "description": "Title of the success page for submitting a debug log"
+  },
+  "debugLogSuccessNextSteps": {
+    "message": "Debug log uploaded. When you contact support, copy the link below and attach it along with a description of the problem you saw and steps to reproduce it.",
+    "description": "Explanation of next steps to take when submitting debug log"
   },
   "debugLogCopy": {
-    "message": "Copy",
+    "message": "Copy Link",
     "description": "Shown as the text for the copy button on the debug log screen"
   },
-  "debugLogCopyAlt": {
-    "message": "Copy link to your clipboard",
-    "description": "Shown as the alt text for the copy button on the debug log screen"
+  "debugLogSave": {
+    "message": "Download",
+    "description": "Shown as the text for the download button on the debug log screen"
   },
   "debugLogLinkCopied": {
     "message": "Link Copied to Your Clipboard",
     "description": "Shown in a toast to let the user know that the link to the debug log has been copied to their clipboard"
   },
   "reportIssue": {
-    "message": "Report an issue",
+    "message": "Contact Support",
     "description": "Link to open the issue tracker"
   },
   "gotIt": {
diff --git a/about.html b/about.html
index 6e62b3d11..0b5a5f3a5 100644
--- a/about.html
+++ b/about.html
@@ -6,6 +6,8 @@
     <meta
       http-equiv="Content-Security-Policy"
       content="default-src 'none';
+            frame-src 'none';
+            form-action 'none';
             font-src 'self';
             img-src 'self' blob: data:;
             media-src 'self' blob:;
diff --git a/app/main.ts b/app/main.ts
index 7b3344ed5..e58d7ed17 100644
--- a/app/main.ts
+++ b/app/main.ts
@@ -4,7 +4,7 @@
 import { join, normalize } from 'path';
 import { pathToFileURL } from 'url';
 import * as os from 'os';
-import { chmod, realpath } from 'fs-extra';
+import { chmod, realpath, writeFile } from 'fs-extra';
 import { randomBytes } from 'crypto';
 
 import pify from 'pify';
@@ -1001,7 +1001,6 @@ function showSettingsWindow() {
     autoHideMenuBar: true,
     backgroundColor: '#3a76f0',
     show: false,
-    modal: false,
     webPreferences: {
       ...defaultWebPrefs,
       nodeIntegration: false,
@@ -1135,13 +1134,12 @@ async function showDebugLogWindow() {
     autoHideMenuBar: true,
     backgroundColor: '#3a76f0',
     show: false,
-    modal: true,
     webPreferences: {
       ...defaultWebPrefs,
       nodeIntegration: false,
       nodeIntegrationInWorker: false,
-      contextIsolation: false,
-      preload: join(__dirname, '../debug_log_preload.js'),
+      contextIsolation: true,
+      preload: join(__dirname, '../ts/windows/debuglog/preload.js'),
       nativeWindowOpen: true,
     },
     parent: mainWindow,
@@ -1156,13 +1154,11 @@ async function showDebugLogWindow() {
   );
 
   debugLogWindow.on('closed', () => {
-    removeDarkOverlay();
     debugLogWindow = undefined;
   });
 
   debugLogWindow.once('ready-to-show', () => {
     if (debugLogWindow) {
-      addDarkOverlay();
       debugLogWindow.show();
     }
   });
@@ -1834,6 +1830,17 @@ ipc.on('close-debug-log', () => {
     debugLogWindow.close();
   }
 });
+ipc.on(
+  'show-debug-log-save-dialog',
+  async (_event: Electron.Event, logText: string) => {
+    const { filePath } = await dialog.showSaveDialog({
+      defaultPath: 'debuglog.txt',
+    });
+    if (filePath) {
+      await writeFile(filePath, logText);
+    }
+  }
+);
 
 // Permissions Popup-related IPC calls
 
diff --git a/debug_log.html b/debug_log.html
index a734323e7..4b3b3f89a 100644
--- a/debug_log.html
+++ b/debug_log.html
@@ -6,11 +6,9 @@
     <meta
       http-equiv="Content-Security-Policy"
       content="default-src 'none';
-            child-src 'self';
-            connect-src 'self' https: wss:;
-            font-src 'self';
-            form-action 'self';
             frame-src 'none';
+            form-action 'none';
+            font-src 'self';
             img-src 'self' blob: data:;
             media-src 'self' blob:;
             object-src 'none';
@@ -23,40 +21,13 @@
       type="text/css"
     />
     <link href="stylesheets/manifest.css" rel="stylesheet" type="text/css" />
-    <style></style>
   </head>
-  <body class="debug-log-window"></body>
-  <script type="text/x-tmpl-mustache" id="debug-log">
-    <div class='content'>
-      <div>
-        <a class='x close' alt='close debug log' href='#'></a>
-        <h1> {{ title }} </h1>
-        <p> {{ debugLogExplanation }}</p>
-      </div>
-      <textarea class='textarea' spellcheck='false' rows='5'></textarea>
-      <div class='buttons'>
-        <button class='grey submit'>{{ submit }}</button>
-      </div>
-      <div class='result'>
-      </div>
-    </div>
-  </script>
-  <script type="text/x-tmpl-mustache" id="debug-log-link">
-    <div class='input-group clearfix'>
-      <input type='text' class='link' readonly value='{{ url }}' />
-      <a class='copy' alt='{{ debugLogCopyAlt }}' target='_blank' href='{{ url }}'>{{ debugLogCopy }}</a>
-    </div>
-    <p>
-      <a class='report-link' target='_blank'
-          href='https://support.signal.org/hc/requests/new'>
-          {{ reportIssue }}
-      </a>
-    </p>
-  </script>
-  <script type="text/x-tmpl-mustache" id="toast">
-    {{ toastMessage }}
-  </script>
-  <script type="text/javascript" src="js/components.js"></script>
-  <script type="text/javascript" src="ts/backboneJquery.js"></script>
-  <script type="text/javascript" src="js/debug_log_start.js"></script>
+  <body>
+    <div id="app"></div>
+    <script
+      type="application/javascript"
+      src="ts/windows/applyTheme.js"
+    ></script>
+    <script type="application/javascript" src="ts/windows/init.js"></script>
+  </body>
 </html>
diff --git a/debug_log_preload.js b/debug_log_preload.js
deleted file mode 100644
index d4caee2dd..000000000
--- a/debug_log_preload.js
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright 2018-2021 Signal Messenger, LLC
-// SPDX-License-Identifier: AGPL-3.0-only
-
-/* global window */
-
-const { ipcRenderer } = require('electron');
-const url = require('url');
-
-// It is important to call this as early as possible
-require('./ts/windows/context');
-
-const { setupI18n } = require('./ts/util/setupI18n');
-const { createSetting } = require('./ts/util/preload');
-const {
-  getEnvironment,
-  setEnvironment,
-  parseEnvironment,
-} = require('./ts/environment');
-
-const config = url.parse(window.location.toString(), true).query;
-const { locale } = config;
-const localeMessages = ipcRenderer.sendSync('locale-data');
-setEnvironment(parseEnvironment(config.environment));
-
-window.getVersion = () => config.version;
-window.themeSetting = createSetting('themeSetting', { setter: false });
-window.i18n = setupI18n(locale, localeMessages);
-
-// got.js appears to need this to successfully submit debug logs to the cloud
-window.nodeSetImmediate = setImmediate;
-
-window.getNodeVersion = () => config.node_version;
-window.getEnvironment = getEnvironment;
-
-window.Backbone = require('backbone');
-require('./ts/backbone/views/whisper_view');
-require('./ts/logging/set_up_renderer_logging').initialize();
-require('./ts/views/debug_log_view');
-
-window.closeDebugLog = () => ipcRenderer.send('close-debug-log');
-window.Backbone = require('backbone');
diff --git a/index.html b/index.html
deleted file mode 100644
index 71b6e377f..000000000
--- a/index.html
+++ /dev/null
@@ -1,33 +0,0 @@
-<!-- Copyright 2014-2021 Signal Messenger, LLC -->
-<!-- SPDX-License-Identifier: AGPL-3.0-only -->
-
-<!DOCTYPE html>
-<html class="no-js" lang="en">
-  <head>
-    <meta charset="utf-8" />
-    <meta
-      content="width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0"
-      name="viewport"
-    />
-    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
-    <title>Signal</title>
-    <meta name="description" content="" />
-    <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <link href="/stylesheets/manifest.css" rel="stylesheet" type="text/css" />
-    <script type="text/javascript" src="js/chromium.js"></script>
-  </head>
-  <body id="signal-container" class="signal index">
-    <div class="app-loading-screen">
-      <div class="content">
-        <div class="module-splash-screen__logo module-img--150"></div>
-        <div class="container">
-          <span class="dot"></span>
-          <span class="dot"></span>
-          <span class="dot"></span>
-        </div>
-        <div class="message"></div>
-      </div>
-    </div>
-    <script type="text/javascript" src="js/index.js"></script>
-  </body>
-</html>
diff --git a/js/debug_log_start.js b/js/debug_log_start.js
deleted file mode 100644
index 35692ece2..000000000
--- a/js/debug_log_start.js
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright 2018-2020 Signal Messenger, LLC
-// SPDX-License-Identifier: AGPL-3.0-only
-
-/* global $: false */
-
-$(document).on('keydown', e => {
-  if (e.keyCode === 27) {
-    window.closeDebugLog();
-  }
-});
-
-const $body = $(document.body);
-
-async function applyTheme() {
-  const theme = await window.themeSetting.getValue();
-  document.body.classList.remove('light-theme');
-  document.body.classList.remove('dark-theme');
-  document.body.classList.add(
-    `${
-      theme === 'system'
-        ? window.SignalContext.nativeThemeListener.getSystemTheme()
-        : theme
-    }-theme`
-  );
-}
-
-applyTheme();
-
-window.SignalContext.nativeThemeListener.subscribe(() => {
-  applyTheme();
-});
-
-// got.js appears to need this to successfully submit debug logs to the cloud
-window.setImmediate = window.nodeSetImmediate;
-
-window.view = new window.Whisper.DebugLogView();
-window.view.$el.appendTo($body);
diff --git a/loading.html b/loading.html
index 67762c5f5..9c5273425 100644
--- a/loading.html
+++ b/loading.html
@@ -4,6 +4,18 @@
 <!DOCTYPE html>
 <html>
   <head>
+    <meta
+      http-equiv="Content-Security-Policy"
+      content="default-src 'none';
+            frame-src 'none';
+            form-action 'none';
+            font-src 'self';
+            img-src 'self' blob: data:;
+            media-src 'self' blob:;
+            object-src 'none';
+            script-src 'self';
+            style-src 'self' 'unsafe-inline';"
+    />
     <link
       href="node_modules/sanitize.css/sanitize.css"
       rel="stylesheet"
diff --git a/package.json b/package.json
index db0512820..b53c4e485 100644
--- a/package.json
+++ b/package.json
@@ -419,8 +419,6 @@
       "app/*",
       "preload.bundle.js",
       "preload_utils.js",
-      "permissions_popup_preload.js",
-      "debug_log_preload.js",
       "main.js",
       "images/**",
       "fonts/**",
diff --git a/permissions_popup.html b/permissions_popup.html
index 7e1ce13d2..4b3b3f89a 100644
--- a/permissions_popup.html
+++ b/permissions_popup.html
@@ -6,6 +6,8 @@
     <meta
       http-equiv="Content-Security-Policy"
       content="default-src 'none';
+            frame-src 'none';
+            form-action 'none';
             font-src 'self';
             img-src 'self' blob: data:;
             media-src 'self' blob:;
diff --git a/preload.js b/preload.js
index b601acdce..799a4c847 100644
--- a/preload.js
+++ b/preload.js
@@ -76,7 +76,6 @@ try {
     }
     return localBuildExpiration;
   };
-  window.getNodeVersion = () => config.node_version;
   window.getHostName = () => config.hostname;
   window.getServerTrustRoot = () => config.serverTrustRoot;
   window.getServerPublicParams = () => config.serverPublicParams;
diff --git a/screenShare.html b/screenShare.html
index 141cbce57..924fb8ddc 100644
--- a/screenShare.html
+++ b/screenShare.html
@@ -6,6 +6,8 @@
     <meta
       http-equiv="Content-Security-Policy"
       content="default-src 'none';
+            frame-src 'none';
+            form-action 'none';
             font-src 'self';
             img-src 'self' blob: data:;
             media-src 'self' blob:;
diff --git a/settings.html b/settings.html
index 794882ec7..2f2145031 100644
--- a/settings.html
+++ b/settings.html
@@ -6,6 +6,8 @@
     <meta
       http-equiv="Content-Security-Policy"
       content="default-src 'none';
+            frame-src 'none';
+            form-action 'none';
             font-src 'self';
             img-src 'self' blob: data:;
             media-src 'self' blob:;
diff --git a/stylesheets/_debugLog.scss b/stylesheets/_debugLog.scss
deleted file mode 100644
index 59e1e07c5..000000000
--- a/stylesheets/_debugLog.scss
+++ /dev/null
@@ -1,90 +0,0 @@
-// Copyright 2016-2020 Signal Messenger, LLC
-// SPDX-License-Identifier: AGPL-3.0-only
-
-.debug-log {
-  &.modal {
-    padding: 50px;
-
-    .content {
-      margin: 0;
-      max-width: 100%;
-      width: 100%;
-      height: 100%;
-      display: flex;
-      flex-direction: column;
-
-      textarea {
-        flex-grow: 1;
-        width: 100%;
-        resize: none;
-        min-height: 100px;
-
-        font-family: Monaco, Consolas, 'Courier New', Courier, monospace;
-        font-size: 12px;
-
-        @include dark-theme {
-          background-color: $color-gray-90;
-          border: 1px solid $color-gray-45;
-          color: $color-gray-02;
-        }
-      }
-    }
-  }
-
-  .result {
-    $open-height: 36px;
-    text-align: center;
-
-    .input-group {
-      display: inline-flex;
-    }
-
-    .copy {
-      height: $open-height;
-      text-align: center;
-      line-height: $open-height;
-      padding: 0 30px;
-      color: unset;
-      text-decoration: none;
-      cursor: pointer;
-
-      border-radius: 0 5px 5px 0;
-
-      @include light-theme {
-        border: solid 1px $color-gray-25;
-        background: $color-gray-02;
-        &:active {
-          background: $color-gray-25;
-        }
-      }
-      @include dark-theme {
-        border: solid 1px $color-gray-45;
-        background-color: $color-gray-90;
-        color: $color-gray-02;
-        &:active {
-          background: $color-gray-25;
-        }
-      }
-    }
-
-    .link {
-      border-radius: 5px 0 0 5px;
-      flex-grow: 1;
-      min-width: 400px;
-      height: $open-height;
-      padding: 0 10px;
-      outline-offset: -4px;
-
-      @include light-theme {
-        border: solid 1px $color-gray-25;
-        border-right: none;
-      }
-      @include dark-theme {
-        color: $color-gray-02;
-        border: solid 1px $color-gray-45;
-        border-right: none;
-        background-color: $color-gray-90;
-      }
-    }
-  }
-}
diff --git a/stylesheets/components/DebugLogWindow.scss b/stylesheets/components/DebugLogWindow.scss
new file mode 100644
index 000000000..78d63b02c
--- /dev/null
+++ b/stylesheets/components/DebugLogWindow.scss
@@ -0,0 +1,74 @@
+// Copyright 2016-2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+.DebugLogWindow {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  margin: 0;
+  max-width: 100%;
+  padding: 16px;
+  width: 100%;
+
+  &__container {
+    align-items: center;
+    display: flex;
+    flex-grow: 1;
+    justify-content: center;
+  }
+
+  &__textarea {
+    font-family: Monaco, Consolas, 'Courier New', Courier, monospace;
+    font-size: 12px;
+    height: 100%;
+    resize: none;
+    width: 100%;
+
+    @include dark-theme {
+      background-color: $color-gray-90;
+      border: 1px solid $color-gray-45;
+      color: $color-gray-02;
+    }
+  }
+
+  &__title {
+    @include font-title-2;
+  }
+
+  &__subtitle {
+    @include font-body-2;
+    @include light-theme {
+      color: $color-gray-60;
+    }
+    @include dark-theme {
+      color: $color-gray-25;
+    }
+  }
+
+  &__footer {
+    align-items: center;
+    display: flex;
+    justify-content: flex-end;
+    margin-top: 16px;
+
+    .module-Button {
+      margin-left: 8px;
+    }
+  }
+
+  &__link {
+    border-radius: 4px;
+    height: 36px;
+    padding: 0 10px;
+    width: 100%;
+
+    @include light-theme {
+      border: solid 1px $color-gray-25;
+    }
+    @include dark-theme {
+      background-color: $color-gray-90;
+      border: solid 1px $color-gray-45;
+      color: $color-gray-02;
+    }
+  }
+}
diff --git a/stylesheets/components/Lightbox.scss b/stylesheets/components/Lightbox.scss
index 1e17d8d92..9a9c0dc68 100644
--- a/stylesheets/components/Lightbox.scss
+++ b/stylesheets/components/Lightbox.scss
@@ -28,7 +28,7 @@
     outline: none;
   }
 
-  &__footer {
+  &__buttons {
     align-items: center;
     display: flex;
     flex-direction: column;
diff --git a/stylesheets/manifest.scss b/stylesheets/manifest.scss
index 784677266..02b52003b 100644
--- a/stylesheets/manifest.scss
+++ b/stylesheets/manifest.scss
@@ -10,7 +10,6 @@
 // Old style: components
 @import 'progress';
 @import 'modal';
-@import 'debugLog';
 @import 'recorder';
 @import 'emoji';
 @import 'settings';
@@ -56,6 +55,7 @@
 @import './components/ConversationView.scss';
 @import './components/CustomColorEditor.scss';
 @import './components/CustomizingPreferredReactionsModal.scss';
+@import './components/DebugLogWindow.scss';
 @import './components/DisappearingTimeDialog.scss';
 @import './components/DisappearingTimerSelect.scss';
 @import './components/EditConversationAttributesModal.scss';
diff --git a/test/i18n_test.js b/test/i18n_test.js
index acda996a4..f9e5630cd 100644
--- a/test/i18n_test.js
+++ b/test/i18n_test.js
@@ -9,7 +9,7 @@ describe('i18n', () => {
       assert.strictEqual(i18n('random'), '');
     });
     it('returns message for given string', () => {
-      assert.equal(i18n('reportIssue'), ['Report an issue']);
+      assert.equal(i18n('reportIssue'), ['Contact Support']);
     });
     it('returns message with single substitution', () => {
       const actual = i18n('cannotUpdateDetail', [
diff --git a/ts/components/DebugLogWindow.stories.tsx b/ts/components/DebugLogWindow.stories.tsx
new file mode 100644
index 000000000..f3751ed25
--- /dev/null
+++ b/ts/components/DebugLogWindow.stories.tsx
@@ -0,0 +1,32 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React from 'react';
+import { action } from '@storybook/addon-actions';
+import { storiesOf } from '@storybook/react';
+
+import enMessages from '../../_locales/en/messages.json';
+import { DebugLogWindow, PropsType } from './DebugLogWindow';
+import { setupI18n } from '../util/setupI18n';
+import { sleep } from '../util/sleep';
+
+const i18n = setupI18n('en', enMessages);
+
+const createProps = (): PropsType => ({
+  closeWindow: action('closeWindow'),
+  downloadLog: action('downloadLog'),
+  i18n,
+  fetchLogs: () => {
+    action('fetchLogs')();
+    return Promise.resolve('Sample logs');
+  },
+  uploadLogs: async (logs: string) => {
+    action('uploadLogs')(logs);
+    await sleep(5000);
+    return 'https://picsum.photos/1800/900';
+  },
+});
+
+const story = storiesOf('Components/DebugLogWindow', module);
+
+story.add('DebugLogWindow', () => <DebugLogWindow {...createProps()} />);
diff --git a/ts/components/DebugLogWindow.tsx b/ts/components/DebugLogWindow.tsx
new file mode 100644
index 000000000..61f119d15
--- /dev/null
+++ b/ts/components/DebugLogWindow.tsx
@@ -0,0 +1,207 @@
+// Copyright 2015-2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React, { MouseEvent, useEffect, useState } from 'react';
+import copyText from 'copy-text-to-clipboard';
+import * as log from '../logging/log';
+import { Button, ButtonVariant } from './Button';
+import { LocalizerType } from '../types/Util';
+import { Spinner } from './Spinner';
+import { ToastDebugLogError } from './ToastDebugLogError';
+import { ToastLinkCopied } from './ToastLinkCopied';
+import { ToastLoadingFullLogs } from './ToastLoadingFullLogs';
+import { openLinkInWebBrowser } from '../util/openLinkInWebBrowser';
+import { useEscapeHandling } from '../hooks/useEscapeHandling';
+
+enum LoadState {
+  NotStarted,
+  Started,
+  Loaded,
+  Submitting,
+}
+
+export type PropsType = {
+  closeWindow: () => unknown;
+  downloadLog: (text: string) => unknown;
+  i18n: LocalizerType;
+  fetchLogs: () => Promise<string>;
+  uploadLogs: (logs: string) => Promise<string>;
+};
+
+enum ToastType {
+  Copied,
+  Error,
+  Loading,
+}
+
+export const DebugLogWindow = ({
+  closeWindow,
+  downloadLog,
+  i18n,
+  fetchLogs,
+  uploadLogs,
+}: PropsType): JSX.Element => {
+  const [loadState, setLoadState] = useState<LoadState>(LoadState.NotStarted);
+  const [logText, setLogText] = useState<string | undefined>();
+  const [publicLogURL, setPublicLogURL] = useState<string | undefined>();
+  const [textAreaValue, setTextAreaValue] = useState<string>(i18n('loading'));
+  const [toastType, setToastType] = useState<ToastType | undefined>();
+
+  useEscapeHandling(closeWindow);
+
+  useEffect(() => {
+    setLoadState(LoadState.Started);
+
+    let shouldCancel = false;
+
+    async function doFetchLogs() {
+      const fetchedLogText = await fetchLogs();
+
+      if (shouldCancel) {
+        return;
+      }
+
+      setToastType(ToastType.Loading);
+      setLogText(fetchedLogText);
+      setLoadState(LoadState.Loaded);
+
+      // This number is somewhat arbitrary; we want to show enough that it's
+      // clear that we need to scroll, but not so many that things get slow.
+      const linesToShow = Math.ceil(Math.min(window.innerHeight, 2000) / 5);
+      const value = fetchedLogText.split(/\n/g, linesToShow).join('\n');
+
+      setTextAreaValue(value);
+      setToastType(undefined);
+    }
+
+    doFetchLogs();
+
+    return () => {
+      shouldCancel = true;
+    };
+  }, [fetchLogs]);
+
+  const handleSubmit = async (ev: MouseEvent) => {
+    ev.preventDefault();
+
+    const text = logText;
+
+    if (!text || text.length === 0) {
+      return;
+    }
+
+    setLoadState(LoadState.Submitting);
+
+    try {
+      const publishedLogURL = await uploadLogs(text);
+      setPublicLogURL(publishedLogURL);
+    } catch (error) {
+      log.error(
+        'DebugLogWindow error:',
+        error && error.stack ? error.stack : error
+      );
+      setLoadState(LoadState.Loaded);
+      setToastType(ToastType.Error);
+    }
+  };
+
+  function closeToast() {
+    setToastType(undefined);
+  }
+
+  let toastElement: JSX.Element | undefined;
+  if (toastType === ToastType.Loading) {
+    toastElement = <ToastLoadingFullLogs i18n={i18n} onClose={closeToast} />;
+  } else if (toastType === ToastType.Copied) {
+    toastElement = <ToastLinkCopied i18n={i18n} onClose={closeToast} />;
+  } else if (toastType === ToastType.Error) {
+    toastElement = <ToastDebugLogError i18n={i18n} onClose={closeToast} />;
+  }
+
+  if (publicLogURL) {
+    const copyLog = (ev: MouseEvent) => {
+      ev.preventDefault();
+      copyText(publicLogURL);
+      setToastType(ToastType.Copied);
+    };
+
+    return (
+      <div className="DebugLogWindow">
+        <div>
+          <div className="DebugLogWindow__title">{i18n('debugLogSuccess')}</div>
+          <p className="DebugLogWindow__subtitle">
+            {i18n('debugLogSuccessNextSteps')}
+          </p>
+        </div>
+        <div className="DebugLogWindow__container">
+          <input
+            className="DebugLogWindow__link"
+            readOnly
+            type="text"
+            value={publicLogURL}
+          />
+        </div>
+        <div className="DebugLogWindow__footer">
+          <Button
+            onClick={() => {
+              openLinkInWebBrowser(
+                'https://support.signal.org/hc/requests/new'
+              );
+            }}
+            variant={ButtonVariant.Secondary}
+          >
+            {i18n('reportIssue')}
+          </Button>
+          <Button onClick={copyLog}>{i18n('debugLogCopy')}</Button>
+        </div>
+        {toastElement}
+      </div>
+    );
+  }
+
+  const canSubmit = Boolean(logText) && loadState !== LoadState.Submitting;
+  const canSave = Boolean(logText);
+  const isLoading =
+    loadState === LoadState.Started || loadState === LoadState.Submitting;
+
+  return (
+    <div className="DebugLogWindow">
+      <div>
+        <div className="DebugLogWindow__title">{i18n('submitDebugLog')}</div>
+        <p className="DebugLogWindow__subtitle">
+          {i18n('debugLogExplanation')}
+        </p>
+      </div>
+      <div className="DebugLogWindow__container">
+        {isLoading ? (
+          <Spinner svgSize="normal" />
+        ) : (
+          <textarea
+            className="DebugLogWindow__textarea"
+            readOnly
+            rows={5}
+            spellCheck={false}
+            value={textAreaValue}
+          />
+        )}
+      </div>
+      <div className="DebugLogWindow__footer">
+        <Button
+          disabled={!canSave}
+          onClick={() => {
+            if (logText) {
+              downloadLog(logText);
+            }
+          }}
+          variant={ButtonVariant.Secondary}
+        >
+          {i18n('debugLogSave')}
+        </Button>
+        <Button disabled={!canSubmit} onClick={handleSubmit}>
+          {i18n('submit')}
+        </Button>
+      </div>
+      {toastElement}
+    </div>
+  );
+};
diff --git a/ts/components/ToastDebugLogError.stories.tsx b/ts/components/ToastDebugLogError.stories.tsx
new file mode 100644
index 000000000..f6c01d70c
--- /dev/null
+++ b/ts/components/ToastDebugLogError.stories.tsx
@@ -0,0 +1,21 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React from 'react';
+import { storiesOf } from '@storybook/react';
+import { action } from '@storybook/addon-actions';
+import { ToastDebugLogError } from './ToastDebugLogError';
+
+import { setupI18n } from '../util/setupI18n';
+import enMessages from '../../_locales/en/messages.json';
+
+const i18n = setupI18n('en', enMessages);
+
+const defaultProps = {
+  i18n,
+  onClose: action('onClose'),
+};
+
+const story = storiesOf('Components/ToastDebugLogError', module);
+
+story.add('ToastDebugLogError', () => <ToastDebugLogError {...defaultProps} />);
diff --git a/ts/components/ToastDebugLogError.tsx b/ts/components/ToastDebugLogError.tsx
new file mode 100644
index 000000000..eb8cf316e
--- /dev/null
+++ b/ts/components/ToastDebugLogError.tsx
@@ -0,0 +1,18 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React from 'react';
+import { LocalizerType } from '../types/Util';
+import { Toast } from './Toast';
+
+type PropsType = {
+  i18n: LocalizerType;
+  onClose: () => unknown;
+};
+
+export const ToastDebugLogError = ({
+  i18n,
+  onClose,
+}: PropsType): JSX.Element => {
+  return <Toast onClose={onClose}>{i18n('debugLogError')}</Toast>;
+};
diff --git a/ts/logging/debuglogs.ts b/ts/logging/debuglogs.ts
index 25d641b9f..b4d666718 100644
--- a/ts/logging/debuglogs.ts
+++ b/ts/logging/debuglogs.ts
@@ -114,19 +114,23 @@ const headerSection = (
   ].join('\n');
 };
 
-const getHeader = ({
-  capabilities,
-  remoteConfig,
-  statistics,
-  user,
-}: Omit<FetchLogIpcData, 'logEntries'>): string =>
+const getHeader = (
+  {
+    capabilities,
+    remoteConfig,
+    statistics,
+    user,
+  }: Omit<FetchLogIpcData, 'logEntries'>,
+  nodeVersion: string,
+  appVersion: string
+): string =>
   [
     headerSection('System info', {
       Time: Date.now(),
       'User agent': window.navigator.userAgent,
-      'Node version': window.getNodeVersion(),
+      'Node version': nodeVersion,
       Environment: getEnvironment(),
-      'App version': window.getVersion(),
+      'App version': appVersion,
     }),
     headerSection('User info', user),
     headerSection('Capabilities', capabilities),
@@ -154,7 +158,10 @@ function formatLine(mightBeEntry: unknown): string {
   return `${getLevel(entry.level)} ${entry.time} ${entry.msg}`;
 }
 
-export function fetch(): Promise<string> {
+export function fetch(
+  nodeVersion: string,
+  appVersion: string
+): Promise<string> {
   return new Promise(resolve => {
     ipc.send('fetch-log');
 
@@ -163,7 +170,7 @@ export function fetch(): Promise<string> {
       let body: string;
       if (isFetchLogIpcData(data)) {
         const { logEntries } = data;
-        header = getHeader(data);
+        header = getHeader(data, nodeVersion, appVersion);
         body = logEntries.map(formatLine).join('\n');
       } else {
         header = headerSectionTitle('Partial logs');
diff --git a/ts/util/lint/exceptions.json b/ts/util/lint/exceptions.json
index 674f06913..a55c22bcf 100644
--- a/ts/util/lint/exceptions.json
+++ b/ts/util/lint/exceptions.json
@@ -106,30 +106,6 @@
     "updated": "2018-09-18T19:19:27.699Z",
     "reasonDetail": "Very limited in what HTML can be injected - dark/light options specify colors for the light/dark parts of QRCode"
   },
-  {
-    "rule": "jQuery-$(",
-    "path": "js/debug_log_start.js",
-    "line": "$(document).on('keydown', e => {",
-    "reasonCategory": "usageTrusted",
-    "updated": "2018-09-19T21:59:32.770Z",
-    "reasonDetail": "Protected from arbitrary input"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "js/debug_log_start.js",
-    "line": "const $body = $(document.body);",
-    "reasonCategory": "usageTrusted",
-    "updated": "2018-09-19T21:59:32.770Z",
-    "reasonDetail": "Protected from arbitrary input"
-  },
-  {
-    "rule": "jQuery-appendTo(",
-    "path": "js/debug_log_start.js",
-    "line": "window.view.$el.appendTo($body);",
-    "reasonCategory": "usageTrusted",
-    "updated": "2018-09-19T18:13:29.628Z",
-    "reasonDetail": "Interacting with already-existing DOM nodes"
-  },
   {
     "rule": "jQuery-$(",
     "path": "js/views/key_verification_view.js",
@@ -13306,202 +13282,6 @@
     "reasonCategory": "falseMatch",
     "updated": "2021-09-17T21:51:57.475Z"
   },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "    template: () => $('#debug-log-link').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "    template: () => $('#debug-log').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "        this.textarea = this.$('.textarea').get(0);",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "        this.$('.submit').attr('disabled', 'disabled');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "        this.$('.submit').removeAttr('disabled');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "        this.$('.buttons, .textarea').remove();",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "        this.$('.result').addClass('loading');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "                el: this.$('.result'),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "            this.$('.loading').removeClass('loading');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "            this.$('.link').focus().select();",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "            this.$('.loading').removeClass('loading');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "            this.$('.result').text(window.i18n('debugLogError'));",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-html(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "    template: () => $('#debug-log-link').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-html(",
-    "path": "ts/views/debug_log_view.js",
-    "line": "    template: () => $('#debug-log').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "  template: () => $('#debug-log-link').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "  template: () => $('#debug-log').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "    this.textarea = this.$('.textarea').get(0);",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "    this.$('.submit').attr('disabled', 'disabled');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "    this.$('.submit').removeAttr('disabled');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "    this.$('.buttons, .textarea').remove();",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "    this.$('.result').addClass('loading');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "        el: this.$('.result'),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "      this.$('.loading').removeClass('loading');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "      this.$('.link').focus().select();",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "      this.$('.loading').removeClass('loading');",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "      this.$('.result').text(window.i18n('debugLogError'));",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-html(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "  template: () => $('#debug-log-link').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
-  {
-    "rule": "jQuery-html(",
-    "path": "ts/views/debug_log_view.ts",
-    "line": "  template: () => $('#debug-log').html(),",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-09-15T21:07:50.995Z"
-  },
   {
     "rule": "jQuery-$(",
     "path": "ts/views/inbox_view.js",
diff --git a/ts/views/debug_log_view.ts b/ts/views/debug_log_view.ts
deleted file mode 100644
index 857801889..000000000
--- a/ts/views/debug_log_view.ts
+++ /dev/null
@@ -1,192 +0,0 @@
-// Copyright 2015-2021 Signal Messenger, LLC
-// SPDX-License-Identifier: AGPL-3.0-only
-
-import copyText from 'copy-text-to-clipboard';
-import * as log from '../logging/log';
-import * as debugLog from '../logging/debuglogs';
-import { ToastLoadingFullLogs } from '../components/ToastLoadingFullLogs';
-import { ToastLinkCopied } from '../components/ToastLinkCopied';
-import { showToast } from '../util/showToast';
-
-window.Whisper = window.Whisper || {};
-const { Whisper } = window;
-
-// This enum-like object describes the load state of `DebugLogView`. It's designed to be
-//   unidirectional; `NotStarted` → `Started` → `LogsFetchedButNotInTextarea`, etc.
-const LoadState = {
-  NotStarted: 0,
-  Started: 1,
-  LogsFetchedButNotInTextarea: 2,
-  PuttingLogsInTextarea: 3,
-  LogsInTextarea: 4,
-};
-
-const DebugLogLinkView = Whisper.View.extend({
-  template: () => $('#debug-log-link').html(),
-  initialize(options: { url: string }) {
-    this.url = options.url;
-  },
-  events: {
-    'click .copy': 'copy',
-  },
-  render_attributes() {
-    return {
-      url: this.url,
-      reportIssue: window.i18n('reportIssue'),
-      debugLogCopy: window.i18n('debugLogCopy'),
-      debugLogCopyAlt: window.i18n('debugLogCopyAlt'),
-    };
-  },
-  copy(e: MouseEvent) {
-    e.preventDefault();
-    const target = e.currentTarget as HTMLAnchorElement;
-    copyText(target.href);
-    showToast(ToastLinkCopied);
-  },
-});
-
-/**
- * The bulk of the logic in this view involves grabbing the logs from disk and putting
- * them in a `<textarea>`. The first part isn't instant but is reasonably fast; setting
- * the textarea's `value` takes a long time.
- *
- * After loading the logs into memory, we only put a small number of lines into the
- * textarea. If the user clicks or scrolls the textarea, we pull the full logs, which
- * can cause the system to lock up for a bit.
- *
- * Ideally, we'd only show a sampling of the logs and allow the user to download and
- * edit them in their own editor. This is mostly a stopgap solution.
- */
-export const DebugLogView = Whisper.View.extend({
-  template: () => $('#debug-log').html(),
-  className: 'debug-log modal',
-  initialize() {
-    this.render();
-
-    this.textarea = this.$('.textarea').get(0);
-    if (!this.textarea) {
-      throw new Error('textarea not found');
-    }
-    this.textarea.setAttribute('readonly', '');
-
-    this.loadState = LoadState.NotStarted;
-    this.putFullLogsInTextareaPlease = false;
-
-    this.fetchLogs();
-  },
-  events: {
-    'click .textarea': 'putFullLogsInTextarea',
-    'scroll .textarea': 'putFullLogsInTextarea',
-    'wheel .textarea': 'putFullLogsInTextarea',
-    'click .submit': 'submit',
-    'click .close': 'close',
-  },
-  render_attributes: {
-    title: window.i18n('submitDebugLog'),
-    cancel: window.i18n('cancel'),
-    submit: window.i18n('submit'),
-    close: window.i18n('gotIt'),
-    debugLogExplanation: window.i18n('debugLogExplanation'),
-  },
-  async fetchLogs() {
-    if (this.loadState !== LoadState.NotStarted) {
-      return;
-    }
-
-    this.loadState = LoadState.Started;
-    this.textarea.value = window.i18n('loading');
-    this.$('.submit').attr('disabled', 'disabled');
-
-    this.logText = await debugLog.fetch();
-    this.loadState = LoadState.LogsFetchedButNotInTextarea;
-
-    // This number is somewhat arbitrary; we want to show enough that it's clear that
-    //   we need to scroll, but not so many that things get slow.
-    const linesToShow = Math.ceil(Math.min(window.innerHeight, 2000) / 5);
-    this.textarea.value = this.logText
-      .split(/\n/g, linesToShow)
-      .concat(['', window.i18n('loading')])
-      .join('\n');
-
-    this.$('.submit').removeAttr('disabled');
-
-    if (this.putFullLogsInTextareaPlease) {
-      this.putFullLogsInTextarea();
-    }
-  },
-  putFullLogsInTextarea() {
-    switch (this.loadState) {
-      case LoadState.NotStarted:
-      case LoadState.Started:
-        this.putFullLogsInTextareaPlease = true;
-        break;
-      case LoadState.LogsInTextarea:
-      case LoadState.PuttingLogsInTextarea:
-        break;
-      case LoadState.LogsFetchedButNotInTextarea:
-        if (!this.logText) {
-          throw new Error('Expected log text to be present');
-        }
-        this.loadState = LoadState.PuttingLogsInTextarea;
-        showToast(ToastLoadingFullLogs);
-        setTimeout(() => {
-          this.textarea.value = this.logText;
-          this.textarea.removeAttribute('readonly');
-          this.loadState = LoadState.LogsInTextarea;
-        }, 0);
-        break;
-      default:
-        // When we can, we should make this throw a `missingCaseError`.
-        break;
-    }
-  },
-  close() {
-    window.closeDebugLog();
-  },
-  async submit(e: SubmitEvent) {
-    e.preventDefault();
-
-    let text;
-    switch (this.loadState) {
-      case LoadState.NotStarted:
-      case LoadState.Started:
-        return;
-      case LoadState.LogsFetchedButNotInTextarea:
-        text = this.logText;
-        break;
-      case LoadState.LogsInTextarea:
-        text = this.textarea.value;
-        break;
-      default:
-        // When we can, we should make this throw a `missingCaseError`.
-        return;
-    }
-
-    if (text.length === 0) {
-      return;
-    }
-
-    this.$('.buttons, .textarea').remove();
-    this.$('.result').addClass('loading');
-
-    try {
-      const publishedLogURL = await debugLog.upload(text, window.getVersion());
-      const view = new DebugLogLinkView({
-        url: publishedLogURL,
-        el: this.$('.result'),
-      });
-      this.$('.loading').removeClass('loading');
-      view.render();
-      this.$('.link').focus().select();
-    } catch (error) {
-      log.error(
-        'DebugLogView error:',
-        error && error.stack ? error.stack : error
-      );
-      this.$('.loading').removeClass('loading');
-      this.$('.result').text(window.i18n('debugLogError'));
-    }
-  },
-});
-
-window.Whisper.DebugLogView = DebugLogView;
diff --git a/ts/window.d.ts b/ts/window.d.ts
index 12132da18..9c9f821d7 100644
--- a/ts/window.d.ts
+++ b/ts/window.d.ts
@@ -111,7 +111,6 @@ import { QualifiedAddress } from './types/QualifiedAddress';
 import { CI } from './CI';
 import { IPCEventsType, IPCEventsValuesType } from './util/createIPCEvents';
 import { ConversationView } from './views/conversation_view';
-import { DebugLogView } from './views/debug_log_view';
 import { LoggerType } from './types/Logging';
 import { SettingType } from './util/preload';
 
@@ -162,7 +161,6 @@ declare global {
     startApp: () => void;
 
     QRCode: any;
-    closeDebugLog: () => unknown;
     removeSetupMenuItems: () => unknown;
     showPermissionsPopup: () => unknown;
 
@@ -209,7 +207,6 @@ declare global {
     getLocale: () => ElectronLocaleType;
     getMediaCameraPermissions: () => Promise<boolean>;
     getMediaPermissions: () => Promise<boolean>;
-    getNodeVersion: () => string;
     getServerPublicParams: () => string;
     getSfuUrl: () => string;
     getSocketStatus: () => SocketStatus;
@@ -499,6 +496,7 @@ declare global {
       context: SignalContext;
       getAppInstance: () => string | undefined;
       getEnvironment: () => string;
+      getNodeVersion: () => string;
       getVersion: () => string;
       i18n: LocalizerType;
       log: LoggerType;
@@ -567,7 +565,6 @@ export class BasicReactWrapperViewClass extends AnyViewClass {
 export type WhisperType = {
   Conversation: typeof ConversationModel;
   ConversationCollection: typeof ConversationModelCollectionType;
-  DebugLogView: typeof DebugLogView;
   Message: typeof MessageModel;
   MessageCollection: typeof MessageModelCollectionType;
 
diff --git a/ts/windows/configure.ts b/ts/windows/configure.ts
index 029c79e3c..996d1ea88 100644
--- a/ts/windows/configure.ts
+++ b/ts/windows/configure.ts
@@ -37,6 +37,7 @@ export const SignalWindow = {
   getAppInstance: (): string | undefined =>
     config.appInstance ? String(config.appInstance) : undefined,
   getEnvironment,
+  getNodeVersion: (): string => String(config.node_version),
   getVersion: (): string => String(config.version),
   i18n: setupI18n(locale, localeMessages),
   log: window.SignalWindow.log,
diff --git a/ts/windows/debuglog/preload.ts b/ts/windows/debuglog/preload.ts
new file mode 100644
index 000000000..18af8ef25
--- /dev/null
+++ b/ts/windows/debuglog/preload.ts
@@ -0,0 +1,44 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React from 'react';
+import ReactDOM from 'react-dom';
+import { contextBridge, ipcRenderer } from 'electron';
+
+// It is important to call this as early as possible
+import '../context';
+
+import { SignalWindow } from '../configure';
+import { DebugLogWindow } from '../../components/DebugLogWindow';
+import * as debugLog from '../../logging/debuglogs';
+
+contextBridge.exposeInMainWorld('SignalWindow', {
+  ...SignalWindow,
+  renderWindow: () => {
+    const environmentText: Array<string> = [SignalWindow.getEnvironment()];
+
+    const appInstance = SignalWindow.getAppInstance();
+    if (appInstance) {
+      environmentText.push(appInstance);
+    }
+
+    ReactDOM.render(
+      React.createElement(DebugLogWindow, {
+        closeWindow: () => ipcRenderer.send('close-debug-log'),
+        downloadLog: (logText: string) =>
+          ipcRenderer.send('show-debug-log-save-dialog', logText),
+        i18n: SignalWindow.i18n,
+        fetchLogs() {
+          return debugLog.fetch(
+            SignalWindow.getNodeVersion(),
+            SignalWindow.getVersion()
+          );
+        },
+        uploadLogs(logs: string) {
+          return debugLog.upload(logs, SignalWindow.getVersion());
+        },
+      }),
+      document.getElementById('app')
+    );
+  },
+});